/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 *    ModelPerformanceChart.java
 *    Copyright (C) 2004 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.gui.beans;

import weka.core.Instances;
import weka.gui.visualize.PlotData2D;
import weka.gui.visualize.VisualizePanel;

import java.awt.BorderLayout;
import java.awt.GraphicsEnvironment;
import java.beans.PropertyChangeListener;
import java.beans.VetoableChangeListener;
import java.beans.beancontext.BeanContext;
import java.beans.beancontext.BeanContextChild;
import java.beans.beancontext.BeanContextChildSupport;
import java.io.Serializable;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JPanel;

/**
 * Bean that can be used for displaying threshold curves (e.g. ROC curves) and
 * scheme error plots
 * 
 * @author Mark Hall
 * @version $Revision: 7548 $
 */
public class ModelPerformanceChart extends JPanel implements
		ThresholdDataListener, VisualizableErrorListener, Visible,
		UserRequestAcceptor, Serializable, BeanContextChild {

	/** for serialization */
	private static final long serialVersionUID = -4602034200071195924L;

	protected BeanVisual m_visual;

	protected transient PlotData2D m_masterPlot;

	protected transient JFrame m_popupFrame;

	protected boolean m_framePoppedUp = false;

	/**
	 * True if this bean's appearance is the design mode appearance
	 */
	protected boolean m_design;

	/**
	 * BeanContex that this bean might be contained within
	 */
	protected transient BeanContext m_beanContext = null;

	private transient VisualizePanel m_visPanel;

	/**
	 * BeanContextChild support
	 */
	protected BeanContextChildSupport m_bcSupport = new BeanContextChildSupport(
			this);

	public ModelPerformanceChart() {
		java.awt.GraphicsEnvironment ge = java.awt.GraphicsEnvironment
				.getLocalGraphicsEnvironment();
		if (!ge.isHeadless()) {
			appearanceFinal();
		}
	}

	/**
	 * Global info for this bean
	 * 
	 * @return a <code>String</code> value
	 */
	public String globalInfo() {
		return Messages.getInstance().getString(
				"ModelPerformanceChart_GlobalInfo_Text");
	}

	protected void appearanceDesign() {
		removeAll();
		m_visual = new BeanVisual("ModelPerformanceChart", BeanVisual.ICON_PATH
				+ "ModelPerformanceChart.gif", BeanVisual.ICON_PATH
				+ "ModelPerformanceChart_animated.gif");
		setLayout(new BorderLayout());
		add(m_visual, BorderLayout.CENTER);
	}

	protected void appearanceFinal() {
		removeAll();
		setLayout(new BorderLayout());
		setUpFinal();
	}

	protected void setUpFinal() {
		if (m_visPanel == null) {
			m_visPanel = new VisualizePanel();
		}
		add(m_visPanel, BorderLayout.CENTER);
	}

	/**
	 * Display a threshold curve.
	 * 
	 * @param e
	 *            a ThresholdDataEvent
	 */
	public synchronized void acceptDataSet(ThresholdDataEvent e) {
		if (!GraphicsEnvironment.isHeadless()) {
			if (m_visPanel == null) {
				m_visPanel = new VisualizePanel();
			}
			if (m_masterPlot == null) {
				m_masterPlot = e.getDataSet();
			}
			try {
				// check for compatable data sets
				if (!m_masterPlot
						.getPlotInstances()
						.relationName()
						.equals(e.getDataSet().getPlotInstances()
								.relationName())) {

					// if not equal then remove all plots and set as new master
					// plot
					m_masterPlot = e.getDataSet();
					m_visPanel.setMasterPlot(m_masterPlot);
					m_visPanel.validate();
					m_visPanel.repaint();
				} else {
					// add as new plot
					m_visPanel.addPlot(e.getDataSet());
					m_visPanel.validate();
					m_visPanel.repaint();
				}
				m_visPanel.setXIndex(4);
				m_visPanel.setYIndex(5);
			} catch (Exception ex) {
				System.err.println(Messages.getInstance().getString(
						"ModelPerformanceChart_AcceptDataSet_Error_Text"));
				ex.printStackTrace();
			}
		}
	}

	/**
	 * Display a scheme error plot.
	 * 
	 * @param e
	 *            a VisualizableErrorEvent
	 */
	public synchronized void acceptDataSet(VisualizableErrorEvent e) {
		if (!GraphicsEnvironment.isHeadless()) {
			if (m_visPanel == null) {
				m_visPanel = new VisualizePanel();
			}
			if (m_masterPlot == null) {
				m_masterPlot = e.getDataSet();
			}
			try {
				m_visPanel.setMasterPlot(m_masterPlot);
			} catch (Exception ex) {
				System.err.println(Messages.getInstance().getString(
						"ModelPerformanceChart_AcceptDataSet_Error_Text"));
				ex.printStackTrace();
			}
			m_visPanel.validate();
			m_visPanel.repaint();
		}
	}

	/**
	 * Set the visual appearance of this bean
	 * 
	 * @param newVisual
	 *            a <code>BeanVisual</code> value
	 */
	public void setVisual(BeanVisual newVisual) {
		m_visual = newVisual;
	}

	/**
	 * Return the visual appearance of this bean
	 */
	public BeanVisual getVisual() {
		return m_visual;
	}

	/**
	 * Use the default appearance for this bean
	 */
	public void useDefaultVisual() {
		m_visual.loadIcons(BeanVisual.ICON_PATH + "DefaultDataVisualizer.gif",
				BeanVisual.ICON_PATH + "DefaultDataVisualizer_animated.gif");
	}

	/**
	 * Describe <code>enumerateRequests</code> method here.
	 * 
	 * @return an <code>Enumeration</code> value
	 */
	public Enumeration enumerateRequests() {
		Vector newVector = new Vector(0);
		if (m_masterPlot != null) {
			newVector.addElement("Show chart");
			newVector.addElement("?Clear all plots");
		}
		return newVector.elements();
	}

	/**
	 * Add a property change listener to this bean
	 * 
	 * @param name
	 *            the name of the property of interest
	 * @param pcl
	 *            a <code>PropertyChangeListener</code> value
	 */
	public void addPropertyChangeListener(String name,
			PropertyChangeListener pcl) {
		m_bcSupport.addPropertyChangeListener(name, pcl);
	}

	/**
	 * Remove a property change listener from this bean
	 * 
	 * @param name
	 *            the name of the property of interest
	 * @param pcl
	 *            a <code>PropertyChangeListener</code> value
	 */
	public void removePropertyChangeListener(String name,
			PropertyChangeListener pcl) {
		m_bcSupport.removePropertyChangeListener(name, pcl);
	}

	/**
	 * Add a vetoable change listener to this bean
	 * 
	 * @param name
	 *            the name of the property of interest
	 * @param vcl
	 *            a <code>VetoableChangeListener</code> value
	 */
	public void addVetoableChangeListener(String name,
			VetoableChangeListener vcl) {
		m_bcSupport.addVetoableChangeListener(name, vcl);
	}

	/**
	 * Remove a vetoable change listener from this bean
	 * 
	 * @param name
	 *            the name of the property of interest
	 * @param vcl
	 *            a <code>VetoableChangeListener</code> value
	 */
	public void removeVetoableChangeListener(String name,
			VetoableChangeListener vcl) {
		m_bcSupport.removeVetoableChangeListener(name, vcl);
	}

	/**
	 * Set a bean context for this bean
	 * 
	 * @param bc
	 *            a <code>BeanContext</code> value
	 */
	public void setBeanContext(BeanContext bc) {
		m_beanContext = bc;
		m_design = m_beanContext.isDesignTime();
		if (m_design) {
			appearanceDesign();
		} else {
			java.awt.GraphicsEnvironment ge = java.awt.GraphicsEnvironment
					.getLocalGraphicsEnvironment();
			if (!ge.isHeadless()) {
				appearanceFinal();
			}
		}
	}

	/**
	 * Return the bean context (if any) that this bean is embedded in
	 * 
	 * @return a <code>BeanContext</code> value
	 */
	public BeanContext getBeanContext() {
		return m_beanContext;
	}

	/**
	 * Describe <code>performRequest</code> method here.
	 * 
	 * @param request
	 *            a <code>String</code> value
	 * @exception IllegalArgumentException
	 *                if an error occurs
	 */
	public void performRequest(String request) {
		if (request.compareTo("Show chart") == 0) {
			try {
				// popup visualize panel
				if (!m_framePoppedUp) {
					m_framePoppedUp = true;

					final javax.swing.JFrame jf = new javax.swing.JFrame(
							Messages.getInstance()
									.getString(
											"ModelPerformanceChart_PerformRequest_Jf_JFRame_Text"));
					jf.setSize(800, 600);
					jf.getContentPane().setLayout(new BorderLayout());
					jf.getContentPane().add(m_visPanel, BorderLayout.CENTER);
					jf.addWindowListener(new java.awt.event.WindowAdapter() {
						public void windowClosing(java.awt.event.WindowEvent e) {
							jf.dispose();
							m_framePoppedUp = false;
						}
					});
					jf.setVisible(true);
					m_popupFrame = jf;
				} else {
					m_popupFrame.toFront();
				}
			} catch (Exception ex) {
				ex.printStackTrace();
				m_framePoppedUp = false;
			}
		} else if (request.equals("Clear all plots")) {
			m_visPanel.removeAllPlots();
			m_visPanel.validate();
			m_visPanel.repaint();
			m_visPanel = null;
			m_masterPlot = null;
		} else {
			throw new IllegalArgumentException(
					request
							+ Messages
									.getInstance()
									.getString(
											"ModelPerformanceChart_PerformRequest_IllegalArgumentException_Text"));
		}
	}

	public static void main(String[] args) {
		try {
			if (args.length != 1) {
				System.err.println(Messages.getInstance().getString(
						"ModelPerformanceChart_Main_Error_Text"));
				System.exit(1);
			}
			java.io.Reader r = new java.io.BufferedReader(
					new java.io.FileReader(args[0]));
			Instances inst = new Instances(r);
			final javax.swing.JFrame jf = new javax.swing.JFrame();
			jf.getContentPane().setLayout(new java.awt.BorderLayout());
			final ModelPerformanceChart as = new ModelPerformanceChart();
			PlotData2D pd = new PlotData2D(inst);
			pd.setPlotName(inst.relationName());
			ThresholdDataEvent roc = new ThresholdDataEvent(as, pd);
			as.acceptDataSet(roc);

			jf.getContentPane().add(as, java.awt.BorderLayout.CENTER);
			jf.addWindowListener(new java.awt.event.WindowAdapter() {
				public void windowClosing(java.awt.event.WindowEvent e) {
					jf.dispose();
					System.exit(0);
				}
			});
			jf.setSize(800, 600);
			jf.setVisible(true);
		} catch (Exception ex) {
			ex.printStackTrace();
			System.err.println(ex.getMessage());
		}
	}
}
